cant beat that with a stick

Cant beat that with a stick is a figurative cliche that is referring to something that cant get any better or cannot be improved upon. Rather than taking this phrase literal as in beating something with a stick, the phrase is figurative so beating in this cliche means to win or improve. Most commonly, cant beat that with a stick is simply a way to say they have found the best way possible to do something or the best product available which cannot be improved upon.